Daniel M. Popper (August 17, 1913 – September 9, 1999) was an American astrophysicist.
Popper was born in Oakland, California.
He studied at the University of California, Berkeley where he received his Ph.D in 1938.
He joined the University of California, Los Angeles in 1947, becoming a full professor in 1955.
He worked at UCLA until his retirement in 1978.